12221021100120 has 96 divisors (see below), whose sum is σ = 42648869574000. Its totient is φ = 2793376250112.

The previous prime is 12221021100083. The next prime is 12221021100137. The reversal of 12221021100120 is 2100112012221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12221021100120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1039196595 + ... + 1039208354.

Almost surely, 2^{12221021100120} is an apocalyptic number.

12221021100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221021100120 is an abundant number, since it is smaller than the sum of its proper divisors (30427848473880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12221021100120 is a wasteful number, since it uses less digits than its factorization.

12221021100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078404977 (or 2078404966 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12221021100120 its reverse (2100112012221), we get a palindrome (14321133112341).

The spelling of 12221021100120 in words is "twelve trillion, two hundred twenty-one billion, twenty-one million, one hundred thousand, one hundred twenty".